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Blood pressure is the force of blood pushing against the walls of the arteries as the heart pumps blood. If this pressure rises and stays high over time, it can damage the body in many ways.

Category

Systolic
(top number)

Diastolic
(bottom number)

Normal

Less than 120

And

Less than 80

Prehypertension

120–139

Or

80–89

High blood pressure

Stage 1

140–159

Or

90–99

Stage 2

160 or higher

Or

100 or higher

Blood pressure doesn’t stay the same all the time. It lowers as you sleep and rises when you wake up. Blood pressure also rises when you’re excited, nervous, or active. If your numbers stay above normal most of the time, you’re at risk for health problems. The risk grows as blood pressure numbers rise.

If you’re being treated for HBP and have repeat readings in the normal range, your blood pressure is under control. However, you still have the condition. You should see your doctor and follow your treatment plan to keep your blood pressure under control.